Home / 211,146.79-291,411.56-129,460.59

Finding the Fourth Proportional to 211,146.79, 291,411.56 and 129,460.59

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Solution

The fourth proportional to 211,146.79, 291,411.56 and 129,460.59 is: 178,673.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    211,146.79 : 291,411.56 = 129,460.59 : x
  2. Step 2: Convert to fraction form
    211,146.79/291,411.56 = 129,460.59/x
  3. Step 3: Cross multiply
    211,146.79x = 291,411.56 × 129,460.59
  4. Step 4: Simplify right side
    211,146.79x = 37,726,311,843.12
  5. Step 5: Solve for x
    x = 37,726,311,843.12/211,146.79
  6. Step 6: Final answer
    x = 178,673.39

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.